Davidson H J, Vestweber J G, Brightman A H, Van Slyke T H, Cox L K, Chengappa M M
Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan 66506, USA.
J Am Vet Med Assoc. 1999 Oct 15;215(8):1142-4.
To establish ocular characteristics, determine nature and prevalence of ocular lesions, and identify representative bacterial flora from the conjunctiva of North American bison (Bison bison).
Prospective study.
63 bison; 45 males and 18 females.
Ophthalmic examinations were performed on 1 group of 38 bison in December 1997 and on a second group of 25 in March 1998. Eyes were examined with a penlight, magnification loop, and indirect ophthalmoscope. Two culture swabs were used to obtain samples from the inferior conjunctival sac. One swab was submitted for isolation of bacteria and the second was submitted for isolation of Mycoplasma organisms.
15 ocular abnormalities were observed in 13 of the 63 bison. These included minor ocular discharge in 5 animals, 1 eyelid laceration, 1 periocular Demodex spp infection, 6 corneal abnormalities, 1 anterior synechia, and 1 cataract. Seventeen species of bacteria were isolated from the 63 swabs submitted for culture. The most prevalent bacteria were of the genus Bacillus (74.6%). Mycoplasma organisms were not observed.
Corneal abnormalities were the most frequently identified ocular lesions in bison. Bacterial flora of the conjunctiva and ocular characteristics were similar to those reported for cattle.
确定北美野牛（美洲野牛）眼睛的特征，确定眼部病变的性质和患病率，并鉴定结膜中的代表性细菌菌群。
前瞻性研究。
63头野牛；45头雄性和18头雌性。
1997年12月对一组38头野牛进行眼科检查，1998年3月对另一组25头野牛进行检查。用手电筒、放大环和间接检眼镜检查眼睛。用两支培养拭子从下结膜囊获取样本。一支拭子用于分离细菌，另一支用于分离支原体。
63头野牛中有13头出现15处眼部异常。其中包括5只动物有少量眼部分泌物、1处眼睑裂伤、1处眼周蠕形螨属感染、6处角膜异常、1处虹膜前粘连和1处白内障。从提交培养的63支拭子中分离出17种细菌。最常见的细菌是芽孢杆菌属（74.6%）。未观察到支原体。
角膜异常是野牛中最常发现的眼部病变。结膜细菌菌群和眼部特征与牛的报道相似。
